|
<br />CLIMATE ZONES 4 5 6
<br />TABLE 10B, Prescriptive Requirements for Small Additions (600 Sq.Ft. and Less) and for Renovations to Existing Buildings.
<br />
<br /> EQUIPMENT MINIMUM INSTAllED
<br /> EFFICIENCY EFFICIENCY
<br /> 1991 1992
<br />...J
<br />0 Central NC SEER = 9.0 10.0 SEER =
<br />0 -
<br />() Room unit or PT AC EER = 8.5 8,5 EER
<br /> =
<br />~ Electric Resistance ANY
<br />z
<br />i= Heat Pump HSPF = 6,4 6.8 HSPF
<br /><( = -
<br />W
<br />I Room unit or PTHP COP = 2.6 2,7 HSPFI =
<br />w HSPF = 6.1 6.1 COP -
<br />()
<br /><( Gas, natural or propane
<br />c.. AFUE = .70 ,78 AFUE =
<br />rJ) -
<br /> Fuel Oil AFUE = ,76 .78 AFUE =
<br />II:
<br />w Electric Resistance EF = .88 EF =
<br />!;( -
<br />3: Gas, natural or propane EF = ,54 EF =
<br />I- -
<br />0
<br />I Fuel Oil EF = .54 EF =
<br />
<br /> COMPONENT MINIMUM INSULATION
<br /> INSULATION INSTALLED
<br /> Conc rete R,S V
<br />!3 Wood frame, 2' x 4' R-1l
<br />..... Wood frame. 2' x 6' R-19
<br />; Common, Wood frame' R,11
<br /> Common. Masonry' R-3
<br /><I) Under attic R-30 /
<br />CI
<br />:z Single assembly R-19
<br />:::::;
<br />W Common, Wood frame' R-11
<br />u
<br /><I) Slab-on-g rade No Minimum V"
<br />ex: Raised wood R-1l
<br />0
<br />9 Raised concrete R-S
<br />... Common, Wood frame' R,ll
<br />U In unconditioned space 1991 1992 /
<br />~ R-4.2 R-6
<br />c In conditioned soace No Minimum
<br />
<br />'Common components are those which separate two conditioned living units in a multifamily building,
<br />TABLE 10C. Prescriptive Requirements for Glass Areas in ADDITIONS ONLY (Renovations see 3 below)
<br />
<br />Maximum percentage glass to floor area allowed is selected by type, overhang length, and shading coefficient. See below, Maximum Installed
<br /> %= 3~ %=
<br /> GLASS TYPE, OVERHANG, AND SHADING COEFFICIENT (TINTING) REQUIRED FOR GLASS PERCENTAGE ALLOWED
<br /> UP TO 20% UP TO 30% UP TO 40% UP TO 50%
<br />Single Double Single Double Single Double Single Double
<br />OH - SC OH - SC OH - SC OH - se OH - se OH - se OH - se OH - se
<br />l' - 1,0 0' - ,90 2' - 1,0 l' - ,90 3' - 1,0 2' - ,90 4' - 1.0 3' - ,90
<br />3' - .86
<br />0' - ,86 l' - ,86 0' - ,70 2' - ,86 l' - .70 2' - ,65 2' - .70
<br /> 0' - ,65 l' - ,65 0' - ,50 l' - .45 l' - ,50
<br /> 0' - .45 0' - .35 0' - ,40
<br /> Shading coefficients (Se) may be obtained from the manufacturer of the glass, Typical shading coefficients are: single-paned clear
<br /> se = 1,0, double-paned clear se = ,90, and single-paned tint se = ,86,
<br />
<br />Form 1000C may be used to comply the following types of construction
<br />
<br />SMALL ADDITIONS TO EXISTING RESI DENCES. Additions which have 600 square feet or less of conditioned area may comply with the Energy Code using this form. The prescriptive
<br />requirements in Tables 10A, 10B and 1 OC apply only to the components of the addition, not to the existing building, Space heating, cooling, and water heating equipment efficiency levels must
<br />be met only when equipment is installed specifically to serve the addition or is being installed in conjunction with the addition construction Components separating unconditioned spaces from
<br />conditioned spaces must meet the prescribed minimum insulation levels
<br />RENOVATIONS. Residential buildings undergoing renovations costing more than 30% of the assessed value of the building must comply with the Energy Code using this form, The
<br />prescriptive requirements in Tables 10A and 10B apply only to the components and equipment being renovated or replaced,
<br />
<br />GENERAL DIRECTIONS:
<br />
<br />1, On the left side oITable 1 OB in the column titled "INSULATION INSTAllED", indicate the R-value of the insulation being added to each component. On the right side of Table 10B indicate the
<br />efficiency levels of the equipment being installed in the column titled "EFFICIENCY INSTAllED", All R-values and efficiencies installed must meet or exceed the minimum values prescribed
<br />in the preceding column for that component. Components and equipment neither being added nor renovated may be left blank,
<br />2, ADDITIONS ONLY. Determine the percentage of new glass to conditioned floor area in the addition as fOllOWS. Total the areas of all glass windows, sliding glass doors and glass panels in
<br />doors which are more than V3 of the area of the door. Double the area of all non. vertical roof glass and add it to the previous total. When glass in existing exterior walls is being removed or
<br />enclosed by the addition, an amount equal to the total area of this glass may be subtracted from the total glass area, Divide the adjusted glass area total by the conditioned floor area of the
<br />addition, Multiply by 100 togetthe percent. Find the largest glass percentage under which your calculated percentage failS on Table 1 OC. For example, 29% glass would qualify for the "Up to
<br />30%" column Prescriptives are given by the type of glass (Single or Double pane) and the overhang (OH) paired with a shading coefficient (SC), Any pair within the selected "Up To "
<br />category is acceptable. For a given glass type and overhang, the maximum shading coefficient allowed is specified. Indicate the category into which the percentage falls in the box at the top
<br />titled "Maximum % = ". In the next column titled" Installed", indicate the calculated percentage of glass in the addition, Actual glass windows and doors previously in the exterior walls
<br />of the house and being reinstalled in the addition, do not have to comply with the overhang and shading coefficient requirements on Table 1 OC, All new glass in the addition must meet the
<br />requirements for one of the options in the glass percentage category you indicated, The overhang (OH) distance is measured perpendicularly from the face of the glass to a point directly
<br />under the outermost edge of the overhang,
<br />3, RENOVATIONS ONLY. Only glass areas which are being replaced as part of the renovations need to meet the following requirements, Any glass type and shading coefficient may be used
<br />for glass areas which are under at least a two foot overhang and whose lowest edge does not extend further than 8 feet from the overhang, Glass areas being renovated that do not meet this
<br />criteria must be either single. pane tinted, double, pane clear, or double-pane tinted.
<br />4, Complete the information requested on the top half of page 1.
<br />5. Read "Minimum Requirements for Small Additions and Renovations', Table 10A on page 1, and check to indicate your intention to comply with all applicable items,
<br />6, Read, sign and date the "Owner/Agent" certification statement on page 1,
<br />
|